Mixer head



FIG. 1 is a perspective view of a mixer head according to my new design;

FIG. 2 is a front elevation view of the mixer head of FIG. 1;

FIG. 3 is a left elevation view of the mixer head of FIG. 1;

FIG. 4 is a right elevation view of the mixer head of FIG. 1; and,

FIG. 5 is a top view of the mixer head of FIG. 1.

The broken lines shown in FIGS. 1-5 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a mixer head, as shown and described. 